Turbo-blower assembly



E. H. SHERBONDY.

TURBO BLOWER ASSEMBLY.

APPLICATION FILED APR. 30, I9I8.

Patented Deo. 13, 1921.

III

Assemblies,

PATENT GFFICE.

mar. H. SHERBONDY, or CLEVELAND, omo.

TURBO-Brown ASSEMBLY.

Specication of Letters Patient. Patented Dec. 13, 1921.

Application led April 30, 1918. Serial N0. 231,765.

To all whom it may concern.'

Be it known that I, EARL H. SHERBONDY, a citizen of the United States, Cleveland, in the county of Cuyahoga and vState of Ohio, have invented and useful Improvements in Turbo-Blower of which the following is a specification.

This invention relates to a turbo-blower assembly, more particularly to an assembly of the blower casing and the turbine casing, in which the one is directly attached to and supported by the other, whereby a com pact and readily assembled unit 1s obtalned, which occupies a minimum of s ace.

Another object of the invention is to provide an air space between the twovcasings, for insulation purposes.

' Another obj ect of the invention is to utilize the means that attach .the two casings -together to hold partsof the turbine casing,

. line 2-2 of Fig. 1; Fig. 3 is a section on the A vsus or blower casing, or both in position.

Referring to the drawings Figure 1 is a side view, partly in section ofthe turbine blower assembly; Fig. .2 isa section on the line 3-3 of Fig. 2; and Fig. 4 is a view, similar to Fig. 3, of a modication.

The blower .casing consists of the front casing element 1, with which may be integrally cast the collector ring 2, and the back ing plate 3, the two, when assembled, serving to define the air channels 4 and 5.

The turbine casing consists of the main casing element 6, shaped substantially like a dish pan. Associated element 6, is a backing plate 7, the two, when assembled, completing the turbine casingfall as more particularly described in my opending case, Serial No.' 224892 filed March 26, 191e.`

Thev turbine blower assembly here described is intended to be operated by the exhaust gases from an airplane engine. These gases are, of course, at a hi h temperature, and for that reason the bac g plate 7 becomesquite hot. It is evident, therefore, that casing 7 must be spaced slightly from the blower casingelement 3, so that the said casing element 3 will not be undul heated.

To this end, the casing 3 and backin pla te are spaced apart. As shown in 1g. 3, sacing elements 8 are provided which are s own as cast integrally with casingvi-s of the residing at.

certain new .8', which preferably with the main casing suitable bolts 9 being threaded into the front casing Y element 2 of the blower, then Y :passing through the casing'element 3, spacing element 8, and then through the backing plate 7 and turbine casing 6. It'should be noted that the mounting means just described, not only holds the blower casing elements 2 and 3 together, but also holds the turbine casing elements 6 and 7 together,v and in addition supportsthe turbine casing on, the blower casing, or the blower casing on" the turbine casing, according as 1the blower casing or the turbine casing i's supported on anyv suitable foundation. The point to be noted is that either casing is supported directly on the other. i

The spacing elements 8 may themselves be spaced from one another an annular ring is cast integral with the spacing elements 8 and the blower casing 3.

- In order to minimize the transmission o'f heat from the hot ybacking plate 7 to the blower casing, there may be provided an annular plate 10, which may be positioned substantially midway between the casing elea way as to provide ments 3 and 7, in such a double layer of air, as particularly described in my co-pending case, Serial No. 224357 filed March'23, 1918. This plate 10 'may be supported 'its periphery by spacing elements 8, the spacing elements 8 carrying rooves or lugs for this purpose.

The pte 10 may be supported from the backing casing element 3 of the-blower, by series of lugs 11, arranged at spaced intervals as shown in Fig. 2.v

The arrangement of the spacing element 8 around the periphery of the two casings, leaves a series of vopenings 12l and 13. The opening 12 is for the ingress of the cooling a1r, and the opening 13 is for the e of the same', all as more particularlg described inn'iy Said co-pending case, erial No. 224,357.

An annular ring 14 may be attached to the casing 3, and carried out far enough to cover up the Several openings) 1 2, as

shown in Fig. 1. This ring 14 may be bent over the ring 8', as shown in Fig. 1;

. iThe ring 14 may be provided with one or more horns 15, facing in the direction of the travel of the airplane, the purpose of these horns 15 being to take in air for passage down the opening 12, between the two,

of the spacing e ements 8 and 9 bolt, de-4 15 scribed in Fig. 3. This bolt 16 carries a threaded portion 17, whichthreaded portion is adapted to engage the parts 2 and 3 of the blower casing. Apwasher mayl be located against the casing 3, as shown. The two parts 19. and 20 of the bolt are made of diiferent diameters, whereby a shoulder -is left between them, against which shoulder the plate 10 is seated. The plate 10 is held against this' shoulder by the annular spacing tube 21, arranged around the portion 2O of the bolt` 16. The end portion 22 .of the bolt 16 is ofstill smallerdiameter, and may be screw threaded for a nut 23, which serves t0 clamp the turbine casing elements 6 and 7 in position. A ring 14', similar to the ring 14 described in connection with Fig. 1 maybe provided. The horn is not shown in Fig. 4, but obviously one may be used in the same manner as in Fig. 1.

It will be noted that I have produced an extremely compact turbo-blower assembly, which will be of particular advantage in use in' an aeroplane fuselage, because of the limitations of space there.

While I have illustrated certain embodiments of my invention, it should be understood that the invention may vbe carried out in other ways, as delined within the scope of the appended claims. v

I cla-im: y

1. In a turbo-blower assembly, a `turbine casing, a blower casing, means engaging with each casing to hold the two casings spaced apart so as to leave an air space therebetween, and an annular plate, carried by `said means and extending intosaid air space. f

2. In a turbo-blower' assembly, a twopart turbine casing, a two-partv blower casing, anda bolt, provided with a plurality of shoulders, to clamp the two parts of the blower casing ,to one another to clamp the two parts of the turbine casing to one another and to further hold the two said casings in rigid spaced relationship.

ture.

In testimony whereof I aiiiX my signa- 

